ListView 与 ScrollView 同在一个界面用头脑想想都觉得不大可能这样做，但还真的有美工这样做了，有点郁闷~！！沟通无果，解决之~~~~！初期还真没啥头绪，Google 一下看到有很多同样碰到这类头痛的问题，不好意思还没描述问题症状。ListView 与 ScrollView 同在一界面会导致ListView 显示变形，因为ListView 也有自带的滚动事件，故无法与ScrollView 相容，可能造成的现象是ListView 只能显示一行或者两行，其他数据在那一点儿宽的地方做滚动，甚不雅观。
下面是我的一个实现 步骤：
1、继承LinearLayout，既然会冲突那就不用ListView 改成线性布局做动态布局效果2、继承BaseAdapter ，可以参照一下Android app源码中 Widget 目录下的SimpleAdapter 为前面扩展的LinearLayout做数据。3、模拟数据填充扩展后的BaseAdapter 为扩展后的LinearLayout 加载数据第一步：新建LinearLayoutForListView 类使其扩展LinearLayout重写以下两个方法：
public LinearLayoutForListView(Context context) { super (context); } public LinearLayoutForListView(Context context, AttributeSet attrs) { super (context, attrs); // TODO Auto-generated constructor stub }
这两个方法可选，不过建议都写上，第一个方法可以让我们通过 编程的方式 实例化出来，第二个方法可以允许我们通过 XML的方式注册 控件，可以在第二个方法里面为扩展的复合组件加属性，详细使用方法请点击这里 。
为其添加get / set 方法
/** * 获取Adapter * * @return adapter */ public AdapterForLinearLayout getAdpater() { return adapter; } /** * 设置数据 * * @param adpater */ public void setAdapter(AdapterForLinearLayout adpater) { this .adapter = adpater; bindLinearLayout(); } /** * 获取点击事件 * * @return */ public OnClickListener getOnclickListner() { return onClickListener; } /** * 设置点击事件 * * @param onClickListener */ public void setOnclickLinstener(OnClickListener onClickListener) { this .onClickListener = onClickListener; }
第二步：新建AdapterForLinearLayout 类继承自BaseAdapter，并为其添加构造函数
private LayoutInflater mInflater; private int resource; private List <? extends Map < String, ?>> data; private String[] from; private int [] to; public AdapterForLinearLayout(Context context, List <? extends Map < String, ?>> data, int resouce, String[] from, int [] to) { this .data = data; this .resource = resouce; this .data = data; this .from = from; this .to = to; this .mInflater = (LayoutInflater) context .getSystemService(Context.LAYOUT_INFLATER_SERVICE); }
此构造函数模仿 simpleAdapter 通过传进来的resouce 为布局设置数据。通过继承BaseAdapter 重要的实现方法在下面getView ，此方法判断通过传进来的 String[] from 与 int[] to 为分别查找出View 并为View 设置相应的Text，代码如下：
@Override public View getView( int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub convertView = mInflater.inflate(resource, null ); Map < String, ?> item = data.get(position); int count = to.length; for ( int i = 0 ; i < count; i ++ ) { View v = convertView.findViewById(to[i]); bindView(v, item, from[i]); } convertView.setTag(position); return convertView; } /** * 绑定视图 * @param view * @param item * @param from */ private void bindView(View view, Map < String, ?> item, String from) { Object data = item.get(from); if (view instanceof TextView) { ((TextView) view).setText(data == null ? "" : data.toString()); } }
Tip:
BindView 方法是一个自定义方法，在方法体内可以为通过判断使本类更具灵活性，如上，你不仅可以判断是TextView 并且可以传入任何你想要的View 只要在方法体内加入相应判断即可，数据可以通过data 做相应处理，具体如何操作读者可另行测试。convertView.setTag(position); 此句代码为View 设置tag 在以后我们可以通过 getTag 找出下标，后文有介绍如何通过下标操作数据。下面是两个类的全部代码，读者可以无须更改直接使用：
LinearLayoutForListView
package com.terry.widget; import android.content.Context; import android.util.AttributeSet; import android.util.Log; import android.view.View; import android.widget.LinearLayout; public class LinearLayoutForListView extends LinearLayout { private AdapterForLinearLayout adapter; private OnClickListener onClickListener = null ; /** * 绑定布局 */ public void bindLinearLayout() { int count = adapter.getCount(); for ( int i = 0 ; i < count; i ++ ) { View v = adapter.getView(i, null , null ); v.setOnClickListener( this .onClickListener); if (i == count - 1 ) { LinearLayout ly = (LinearLayout) v; ly.removeViewAt( 2 ); } addView(v, i); } Log.v( " countTAG " , "" + count); } public LinearLayoutForListView(Context context) { super (context); } public LinearLayoutForListView(Context context, AttributeSet attrs) { super (context, attrs); // TODO Auto-generated constructor stub } /** * 获取Adapter * * @return adapter */ public AdapterForLinearLayout getAdpater() { return adapter; } /** * 设置数据 * * @param adpater */ public void setAdapter(AdapterForLinearLayout adpater) { this .adapter = adpater; bindLinearLayout(); } /** * 获取点击事件 * * @return */ public OnClickListener getOnclickListner() { return onClickListener; } /** * 设置点击事件 * * @param onClickListener */ public void setOnclickLinstener(OnClickListener onClickListener) { this .onClickListener = onClickListener; }}
AdapterForLinearLayout
package com.terry.widget; import java.util.List; import java.util.Map; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.TextView; public class AdapterForLinearLayout extends BaseAdapter { private LayoutInflater mInflater; private int resource; private List <? extends Map < String, ?>> data; private String[] from; private int [] to; public AdapterForLinearLayout(Context context, List <? extends Map < String, ?>> data, int resouce, String[] from, int [] to) { this .data = data; this .resource = resouce; this .data = data; this .from = from; this .to = to; this .mInflater = (LayoutInflater) context .getSystemService(Context.LAYOUT_INFLATER_SERVICE); } @Override public int getCount() { // TODO Auto-generated method stub return data.size(); } @Override public Object getItem( int position) { // TODO Auto-generated method stub return data.get(position); } @SuppressWarnings( " unchecked " ) public String get( int position, Object key) { Map < String, ?> map = (Map < String, ?> ) getItem(position); return map.get(key).toString(); } @Override public long getItemId( int position) { // TODO Auto-generated method stub return position; } @Override public View getView( int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub convertView = mInflater.inflate(resource, null ); Map < String, ?> item = data.get(position); int count = to.length; for ( int i = 0 ; i < count; i ++ ) { View v = convertView.findViewById(to[i]); bindView(v, item, from[i]); } convertView.setTag(position); return convertView; } /** * 绑定视图 * @param view * @param item * @param from */ private void bindView(View view, Map < String, ?> item, String from) { Object data = item.get(from); if (view instanceof TextView) { ((TextView) view).setText(data == null ? "" : data.toString()); } }}
对应的XML 如下：
<? xml version="1.0" encoding="UTF-8" ?> < LinearLayout xmlns:android ="http://schemas.android.com/apk/res/android" android:orientation ="vertical" android:layout_width ="fill_parent" android:layout_height ="fill_parent" > < TextView android:id ="@+id/TextView01" android:layout_marginLeft ="10px" android:textAppearance ="?android:attr/textAppearanceLarge" android:layout_width ="wrap_content" android:layout_height ="wrap_content" > </ TextView > < TextView android:id ="@+id/TextView02" android:layout_width ="wrap_content" android:textAppearance ="?android:attr/textAppearanceSmall" android:layout_marginLeft ="10px" android:layout_height ="wrap_content" > </ TextView > < View android:layout_height ="1px" android:background ="#FFFFFF" android:layout_width ="fill_parent" ></ View > </ LinearLayout >
第三步：主页面使用控件并为其设置数据
XML如下： < com.terry.widget.LinearLayoutForListView android:orientation ="vertical" android:layout_width ="450px" android:layout_height ="fill_parent" android:id ="@+id/ListView01" > </ com.terry.widget.LinearLayoutForListView >加载数据如下： lv = (LinearLayoutForListView) findViewById(R.id.ListView01); for ( int i = 0 ; i < 10 ; i ++ ) { HashMap < String, Object > map = new HashMap < String, Object > (); map.put( " key_name " , " name " + i); map.put( " value_name " , " value " + i); list.add(map); } final AdapterForLinearLayout Layoutadpater = new AdapterForLinearLayout( this , list, R.layout.test, new String[] { " key_name " , " value_name " }, new int [] { R.id.TextView01, R.id.TextView02 });
事件操作，并通过下标得到数据源： lv.setOnclickLinstener( new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Toast.makeText( BlueToothActivity. this , Layoutadpater.get(Integer.parseInt(v.getTag() .toString()), " key_name " ), 1000 ).show(); } }); lv.setAdapter(Layoutadpater);
Tip：get方法是在Layoutadpater 封装的一个通过下标获取相应数据的方法请参考上文。
至此完成。有碰到这个问题的朋友可以试试。
转载于:https://www.cnblogs.com/TerryBlog/archive/2010/08/13/1799045.html
相关资源：数据结构—成绩单生成器